changes to make plugin_example useful as a template:

force pkglibdir to be in "mysql" package, template files:
AUTHORS, ChangeLog, NEWS, README, configure.in

plugin/fulltext/AUTHORS

+AUTHORS file example for a plugin

plugin/fulltext/ChangeLog

+ChangeLog file example for a plugin

plugin/fulltext/Makefile.am

+#Makefile.am example for a plugin
+
+pkglibdir=$(libdir)/mysql
 INCLUDES= -I$(top_builddir)/include -I$(top_srcdir)/include
 noinst_LTLIBRARIES= mypluglib.la
+#pkglib_LTLIBRARIES= mypluglib.la
 mypluglib_la_SOURCES= plugin_example.c
 mypluglib_la_LDFLAGS= -module -rpath $(pkglibdir)
+

plugin/fulltext/NEWS

+NEWS file example for a plugin

plugin/fulltext/README

+README file example for a plugin

plugin/fulltext/configure.in

+# configure.in example for a plugin
+
+AC_INIT(plugin_example, 0.1)
+AM_INIT_AUTOMAKE
+AC_PROG_LIBTOOL
+AC_CONFIG_FILES([Makefile])
+AC_OUTPUT
+